Boiler Repair in Logan Square

Boiler repair for a malfunctioning thermopile in Chicago’s Logan Square neighborhood 

When a thermopile fails, the boiler often loses the ability to keep the pilot light lit. This issue can quickly leave your home without consistent heating during cold Chicago weather.

Our HVAC technician started with a full boiler inspection to identify the root cause of the boiler failure. We tested the thermopile’s millivolt output and confirmed it was the cause of the boiler’s issue. Low voltage prevents the gas valve from opening properly, which stops the heating cycle. We also inspected the pilot assembly, gas valve, and wiring connections to rule out related issues.

For this boiler repair, we safely shut off gas and power before beginning work. The faulty thermopile was removed and replaced with a new, manufacturer-approved component. Correct placement within the pilot flame ensures proper voltage generation and long-term performance.

After installation, we relit the pilot light and tested system operation. The new thermopile produced stable voltage, and the boiler cycled on without issues. We verified consistent heating output and checked venting to ensure safe combustion.

Professional boiler repair helps extend system life and improve energy efficiency. Routine boiler maintenance can catch worn components early and prevent emergency breakdowns. If your boiler pilot light will not stay lit, a failing thermopile may be the cause. Contact a licensed HVAC technician in Chicago for prompt, reliable boiler repair service.